With 5.11.12-051112-generic in the guest error changes to: unchecked MSR access error: WRMSR to 0xda0 (tried to write 0x0000000000000000) at rIP: 0xffffffff9587fa54 (native_write_msr+0x4/0x30) Call Trace: ? fpu__init_cpu_xstate+0xb8/0xf0 fpu__init_system_xstate+0x143/0x354 fpu__init_system+0x6e/0x93 early_identify_cpu.constprop.0+0x112/0x144 early_cpu_init+0x77/0x7c setup_arch+0xc9/0x8cc ? lockdown_lsm_init+0x21/0x25 start_kernel+0x67/0x4a2 ? copy_bootdata+0x1d/0x5d x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x8b/0x8f secondary_startup_64_no_verify+0xc2/0xcb
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921754 Title: Add missing cpu feature bits in EPYC-Rome model To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1921754/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs